This indicator light comes on after the ignition key is turned to the ON position and then it will go off in approximately 3 seconds if there is no problem with EPS. This light also comes on when the EPS has some problems. If it comes on while driving, we recommend that the system be checked by an authorized Kia dealer.
Kia Cee'd JD Service Manual: Tire Repair procedures
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Using tires and wheel other than the recommended sizes could
cause unusual handling characteristics and poor vehicle control,
resulting in a serious accident.
...
Kia Cee'd JD Owners Manual: Notes on the safe use of the Tire
Mobility Kit
Park your car at the side of the
road so that you can work with the
Tire Mobility Kit away from moving
traffic.
To be sure your vehicle will not
move, even when you're on fairly
level ground, always set your parking
brake.
Only use the Tire Mobility Kit for
sealing/inflat ...